Plate-valve.



L. C. BAYLES.

PLATE VALVE. APPLICATION FILED MAY10.-I9I7.

1,299,815 Patented Apr. 8,1919.

, I l/VVE/VTOI? C 7 5 M ff 147 ORA/EV LEWIS C. BAYLES, OF EASTON, PENNSYLVANIA, ASSIGNOR TO INGERSOLL-RAND COMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

PLATE-VALVE.

Specification of Letters Patent.

Patented Apr. 8, 1919.

Application filed May 10,. 1917. Serial No. 167,705.

To all whom it may concern.

Be it known that I, LEWIS C. Barnes, a

Valves, of which the following is a specification.

This invention relates to plate valves and in particular to valves of this type adapted to compressors for air or gas.

The objects of my invention are to produce a valve of this type adapted to give a large valve area and lift, to simplify the construction of the valve guiding arms and to increase the flexibility of the guiding arms between the annular valve sections and the central supporting member.

In the drawing annexed hereto and form? ing a part of this specification,

Figure 1 is a plan view of the valve showing my improvements, andv Fig. 2 is a cross sectional view of the valve taken on the line II-II of Fig. 1.

In the drawings, 1 shows the valve sections connected to the central supporting portion 2 by means of the flexible 'connect ing and guiding members 3 and 4:, which are formed integrally with the valve sections 1 and the supporting member 2. The connecting and guiding members 3 and 4 are preferably reduced in thickness somewhat to increase their flexibility, which reduction in thickness is carried out throughout the entire length of curvature of the connecting arms in order to equalize the flexibility of the arms. This is clearly shown at 5 and 6 in Fig. 2.

Between the valve sections 1 and the flexible guiding and connecting arms 3 and 4 are short radial portions respectively marked 7 and 8, and extending inwardly from the innermost valve section. These are of the same thickness as the valve sections 1 at their outer ends and are reduced to the thicknessof'the guiding and connecting arms 3 at their inner ends. The central suppo rting portion 2 is provided with two diametrically opposite radial extensions respectively marked 9 and 10 in alinement with the radial portions'( and 8 above referred to. These radial extensions 9 and 10 are preferably of the same thickness as the central portion 2 at their inner ends and are reduced in thickness to that of the guiding and connecting arms 3 and 4 at their outer ends.

By means of this construction, the thin flexing section of the plate valve extends throughout a complete circle which is of uniform thickness. This allows the grinding operation to be greatly simplified over that in prior forms of valves, as for instance, in that shown in the patent to Rogler, No. 921,892, granted May 18th, 1908, (see Fig. 15), in which the flexing arms are not of uniform thickness and are ground or otherwise reduced in thickness only on a portion of their circumference. This construction is inferior for the reason that all of the flexing takes place within a small section of the circumference thus placing all the strain upon these sections. In the present invention the strain of bending is carried by the entire length of the guiding arms, rather than, as is shown in the patent above referred to, by a portion only of the arms. Making the guiding arms as thick as is necessary for the valve portions would unduly reduce their flexibility and life.

It is to be understood that the present showing and description disclose only one specific embodiment of the present invention,

and other forms and modifications are included within the spirit and scope thereof, as expressed in the appended claims.

What I claim is:

1. A plate valve having annular valve sections and a central supporting portion, integral flexible connecting and guiding arms,

extending between said valve sections and central supporting portion, said connecting arms being of uniform thickness throughout their length and of less thickness than the annular valve sections to equalize and increase their flexibility.

2. In a plate valve having annular valve sections and a central supporting portion, integral curved flexible connecting and guiding arms extending between said valve sections and central supporting portion, said connecting arms being of uniform thickness throughout their curvature and of less thickness than the annular valve sections to equalize and increase their flexibility.

3. In a plate valve having annular valve sections and a central supporting portion, integral semi-circular flexible connecting and guiding arms extending between said valve connecting arms being of uniform thickness I throughout their length and of less thick-, nessthan the annular valve sections to equalize and increase their flexibility.

4. A plate valve having annular valve sections and a central supporting portion, integral flexible guiding arms of segmental annular ring form and uniform thickness,

10 but thinner than the valve sections and inte gral radial connecting parts ]oining\ the.

weenie arms with the valve portions and .tlie central supporting portion, said connecting parts be-v ing of the same thickness as the valve sections and the central supporting portion where they join s'aidportions, and reduced in thickness to correspond to the thickness of the guiding arms where they join said arms.

In testimony whereof I have hereunto set 20 my hand. a

' LEWIS C. BAYLES. 

